期刊名称：International Journal on Electrical Engineering and Informatics
印刷版ISSN：2085-6830
出版年度：2015
卷号：7
期号：2
DOI：10.15676/ijeei.2015.7.2.9
出版社：School of Electrical Engineering and Informatics
摘要：The new formulation of resonant frequency for absorber based onartificial magnetic conductor (AMC) structure composed of square patch array isinvestigated theoretically based on analytical approach. The investigation isperformed to define the resonant frequency using equivalent LC circuit modelfrom the physical dimension and material property of square patch array. Theproposed equivalent LC circuit model formulas are derived using the conformalmapping theory for the adjacent co-planar square patches and the Gauss’ law andFaraday’s law for the square patch parallel with the ground plane. The analyticalapproach is then examined and compared with the numerical results of AMCstructure simulated by use of commercialized software. Here, the AMC structureconsists of a two-dimensionally (2D) array square patches deployed on adielectric substrate. The frequency range of analysis which is observed from 1-5GHz corresponds to the working frequency of square patch. Hence, the analyzedparameters of square patch, i.e. unit cell, include substrate width, substratethickness, substrate properties, patch width, and the gap between patches. Itshows that the proposed formulation of equivalent LC circuit model yields betterresults compared to the existing formulation. Moreover, the proposedformulation shows the bandpass-like structure in which the waves are absorbedin a certain value of frequency band. This is appropriate to the absorbanceconcept where some absorber will restrain the energy from incoming waves.
关键词：Absorber; artificial magnetic conductor; square patch; resonant;frequency.
